145 lines
3.7 KiB
Bash
145 lines
3.7 KiB
Bash
# $NetBSD: genassym.sh,v 1.8 1997/08/20 06:58:10 mikel Exp $
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#
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# Copyright (c) 1997 Matthias Pfaller.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by Matthias Pfaller.
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# 4. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# If first argument is -c, create a temporary C file,
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# compile it and execute the result.
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awk=${AWK:-awk}
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if [ $1 = '-c' ] ; then
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shift
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ccode=1
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else
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ccode=0
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fi
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trap "rm -f /tmp/$$.c /tmp/genassym.$$" 0 1 2 3 15
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$awk '
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BEGIN {
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printf("#ifndef _KERNEL\n#define _KERNEL\n#endif\n");
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printf("#define offsetof(type, member) ((size_t)(&((type *)0)->member))\n");
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defining = 0;
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}
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$0 ~ /^[ \t]*#.*/ || $0 ~ /^[ \t]*$/ {
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# Just ignore comments and empty lines
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next;
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}
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/^include[ \t]/ {
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if (defining != 0) {
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defining = 0;
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printf("}\n");
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}
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printf("#%s\n", $0);
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next;
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}
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$0 ~ /^if[ \t]/ ||
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$0 ~ /^ifdef[ \t]/ ||
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$0 ~ /^ifndef[ \t]/ ||
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$0 ~ /^else/ ||
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$0 ~ /^elif[ \t]/ ||
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$0 ~ /^endif/ {
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printf("#%s\n", $0);
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next;
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}
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/^struct[ \t]/ {
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structname = $2;
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$0 = "define " structname "_SIZEOF sizeof(struct " structname ")";
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# fall through
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}
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/^member[ \t]/ {
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$0 = "define " $2 " offsetof(struct " structname ", " $2 ")";
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# fall through
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}
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/^export[ \t]/ {
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$0 = "define " $2 " " $2;
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# fall through
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}
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/^define[ \t]/ {
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if (defining == 0) {
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defining = 1;
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printf("void f" FNR "(void);\n");
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printf("void f" FNR "() {\n");
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if (ccode)
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call[FNR] = "f" FNR;
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defining = 1;
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}
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value = $0
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gsub("^define[ \t]+[A-Za-z_][A-Za-z_0-9]*[ \t]+", "", value)
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if (ccode)
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printf("printf(\"#define " $2 " %%ld\\n\", (long)" value ");\n");
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else
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printf("__asm(\"XYZZY %s %%0\" : : \"n\" (%s));\n", $2, value);
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next;
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}
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/^quote[ \t]/ {
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gsub("^quote[ \t]+", "");
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print;
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next;
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}
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{
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printf("syntax error in line %d\n", FNR) >"/dev/stderr";
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exit(1);
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}
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END {
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if (defining != 0) {
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defining = 0;
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printf("}\n");
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}
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if (ccode) {
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printf("int main(int argc, char **argv) {");
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for (i in call)
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printf(call[i] "();");
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printf("return(0); }\n");
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}
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}
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' ccode=$ccode > /tmp/$$.c || exit 1
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if [ $ccode = 1 ] ; then
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"$@" /tmp/$$.c -o /tmp/genassym.$$ && /tmp/genassym.$$
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else
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# Kill all of the "#" and "$" modifiers; locore.s already
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# prepends the correct "constant" modifier.
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"$@" -S /tmp/$$.c -o -| sed -e 's/#//g' -e 's/\$//g' | \
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sed -n 's/.*XYZZY/#define/gp'
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fi
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